Copenhagen row over Ban Ki-moon's 2C remark

(BBC NEWS) — A controversy has erupted in Copenhagen after the UN secretary general said talks should focus on keeping global temperature rises below 2C 3.6F.

In an interview with BBC News, Ban Ki-moon said the target was a realistic ambition for the climate summit. But developing nations delegates, who want emissions capped to limit the rise to 1.5C, were furious.